Friday's Child by Georgette Heyer

The novel is a delightful Regency romance that follows the impulsive and charming Lord Sheringham, known as Sherry, who, after being rejected by the woman he loves, decides to marry the next girl he sees to gain control of his inheritance. He hastily weds Hero Wantage, a sweet and naive young woman who has adored him since childhood. As they navigate the complexities of high society and their evolving relationship, Sherry and Hero encounter a series of humorous and challenging situations that ultimately lead them to discover the true depth of their feelings for each other, transforming their marriage of convenience into a genuine love match. The 3874th greatest book of all time